Transmission of electrical energy



(No Model.)

R. M. HUNTER. TRANSMISSION OF ELECTRICAL ENERGY. No. 596,042. Patented De0.21. 1897.

FIGI

aide )(nvenror UNITED STATES PATENT ()EEIoE.

RUDOLPH M. HUNTER, OE PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THE GENERAL ELECTRIC COMPANY, OF NEW YORK.

TRANSMISSION OF ELECTRICAL ENERGY.

SPECIFICATION forming part of Letters Patent No. 596,042, dated December 21, 1897.

Original application filed June 18, 1887, Serial No. 241,729. Divided and this application filed April 20, 1892. Serial I No. 429,835. (No model.)

To all whom it may concern: ply whatever current is desired irrespective Be it known that I, RUDOLPH M. HUNTER, of the others, or one or more of the local cirof the city and county of Philadelphia and cuits may be cut out without materially af- State of Pennsylvania, have invented an Imfecting the line-current. If desired, the secprovement in Transmission of Electrical Enondary generators may be regulated simulergy, of which the following is a specification. taneously from one place on the line by sim- My invention has reference to the transply varying the line-current. Such genermission of electrical energy; and it consists ators may be put on high-tension or arc-lightof certain improvements which are fully set ing circuits and by properly proportioning 1o forth in the following specification and shown the diameters of the wire in the two coils of in the accompanying drawings, which form the secondary generator currents of the dea part thereof. sired tension may be generated for local use This application (Case No. 218) is a diviwithout interfering with the line-circuit.

sion of my application, Serial No. 241,729, filed The interruption of the primary current is June 18, 1887. may be in the primary dynamo-electric gen- Prior to the date of my invention electric erator or at the secondary generator or in currents were commonly supplied directly to duction-coil, the principle in its broad sense the electric lamps or motors, and hence the being the same. lVhile the secondary genelectromotive force and volume of current reerator is an induction-coil, it is to be under- 20 quired by the lamps or motors was also restood that the interrupted current is the high quired to be supplied to the line-circuit. In tension primary current and is passed through circuits of great length or where great volthe fine-Wire coil, whereas the induced or secumes of current are required the supply-conondary current is of low tension and supplied ductors must be very large and are necesto the local or secondary circuit. It might 2 5 sarily expensive. This is particularly so in be in the form of a simple induction-coil with incandescent lighting, where the generating or without magnetizable metal upon or beplant is located at great distance from the tween which the coils are wound or may be lamps. like a Rhumkorif coil with the provision of In systems where the incandescent plants the interrupter in the high-resistance circuit 0 in the houses are separated by great disin place of the low-resistance circuit, as was So tances and are supplied from a single generheretofore customary. The change enables ating-station common to all of them the exthe production of the results herein set out. pense of construction often renders the un- I do not limit myself to any details of condertaking unprofitable. struction for accomplishing the results of the 5 The object of my invention is to overcome system herein described, as my invention the above and many other attendant objecalso includes the method of transmitting elections. trical energy by the use of secondary gener- I am enabled to generate the line-current ators or induction-coils in the manner herein at a central station and supply it in the form provided.

4o of high-tension currents to the places of use, In the drawings, Figure 1 is a diagram show- 0 and then by means of a secondary generator ing one construction of apparatus for carryor induction a coil I produce secondary curing out my invention, and Fig. 2 is a similar rents of low tension which are supplied to a view of another form of apparatus. local or secondary circuit including the lamps A represents a dynamo-electric machine or 5 or other translating devices at the said places primary generator. of use. As many secondary generators as de- B is the line or primary line conductor of sired may be in circuit with the same linepreferably high resistance, and may have a circuit and may supply currents to as many regulator O of any suitable construction, if separate lighting plants. Each of these secdesired.

50 o'ndary generators may be controlled to sup- D represents the secondary generators or induction-coils, of which E is the primary or fine-wire coil, F is the secondary or coarsewire coil, and G is the magnet core or sheath. The fine-wire coil is in circuit with the line D, and the coarse-wire coil is in circuit with the local circuit 11 of low resistance.

1 represents incandescent lamps, motors, or other translating devices preferably arranged in multiple with the coarse-wire coil F. The local circuits H may have cut-out switches h, if desired, to cut out said local circuits H irrespective of the working of the line B.

In Fig. 1 the dynamo or electric generator A may be of any construction adapted to prod uce the necessary current. It is illustrated as a continuous-current machine, and the secondary generators have current-interrupting devices d to interrupt the line or primary current.

In Fig. 2 the secondary generators are of the simple form having no interrupters, and a single interrupter L is used with a continuous-current machine A for interrupting the line-circuit and is shown as operated by the armature-shaft Z. This interrupter may be operated in any suitable manner.

A shunt-circuit controlled by a switch I) may be employed to shunt the line-current around a secondary generator, if so desired, when not in use, so as to maintain the continuity of the line-circuit Without the resistance of the secondary generator.

The currents generated will be maintained and practically uniform currents of high tension, and the currents induced will be maintained and practically uniform alternating currents and will be generated at the second station or place of consumption by the inductive influences of the high-tension currents.

I do not limit myself to any particular construction of elements here shown, as they may be modified in many ways without departing from my invention.

that I claim as new, and desire to secure by Letters Patent, is

1. The improvement in the art of transmitting electrical energy to and utilizing it at a distance from the source, which consists in generating m aintained and practically uniform currents of high tension at one station and sending the same over a line of conductors to another station and generating maintained and practically uniform currents of lower tension at the second station by the ind uctive influence of the high-tension currents.

2. The improvement in the art of. transmitting electrical energy to and utilizing it at a distance from the source, which consists in generating maintained and practically uniform currents of high tension at one station and sending the same over a line of conductors to anotherstation, generating maintained and practically uniform currents of lower tension at the second station by the inductive influence of the high-tension currents, and

converting these maintained low-tension currents into other forms of energy, such as heat, light, &c.

3. The improvement in the art of transmitting electrical energy to and utilizing it at a distance from the source, which consists in generating maintained and practically uniform alternating currents of high tension at one station and sending the same over a line of conductors to another station, and generating maintained and practically uniform alternating currents of lower tension at the second station by the inductive influence of the high-tension currents.

4. The improvement in the art of transmitting electrical energy to and utilizing it at a distance from the source, which consists in generating maintained and practically uniform alternating currents of high tension at one station and sending the same over a line of conductors to another station, generating maintained and practically uniform alternating currents of lower tension at the second station by the inductive influence of the hightension currents, and converting these maintained low-tension alternating currents into other forms of energy, such as heat, light, the.

5. The method of transmitting electrical energy consisting in transmitting an electric current of high tension and smallvolume over a line-circuit and at one or more places 011 the line-circuit, producing by means of induction maintained and practically uniform currents of low tension and relatively large volume, and supplying said low-tension currents to one or more translating devices in said local circuits.

6. The method of transmitting electrical energy consisting in transmitting an electric current of high tension and small volume over a line-circuit and at one or more places on the line-circuit, producing by means of inductioncurrents of low tension and relatively large volume and supplying said low-tension currents to one or more translating devices in said local circuits, and regulating the linecurrent to Vary all of the currents in the local circuits simultaneously.

7. The combination of a dynamo-electric generator for generating a varying-potential or interrupted current, a line or primary circuit of high resistance, .one or more inductioncoils or secondary generators having their fine-wire coils in circuit with the line-circuit,

one or more local or secondary circuits of low resistance respectively connected with the coarse-wire coils of the induction-coils, a resistance-changer in the line-circuit to vary the line-current, and switches to cut one or more of the local circuits out of action.

8. The combination of a dynamoelcctric generator for generating a primary current of high tension, a line-circuit a secondary generator or induction-coil having its fine-wire coil included in the line or primary circuit, a local circuit including the coarse-wire coil of the secondary generator, an electric lamp IIO or translating device in said local or secondary circuit and means to interrupt the current flowing over the line or primary circuit and through the fine Wire of the secondary generator.

9. The combination of a dynamo-electric generator for currents of high tension, a line or primary circuit, a secondary generator having its fine-Wire coil in circuit with the line, a local or secondary circuit in series with the coarse-Wire coil of the secondary generator, two or more electric lamps or translating devices for currents of low tension in multiple connection With the local or secondary circuit, and aregulator to simultaneously control the current in the line and local circuit.

10. The combination of a dynamo-electric generator for generating currents of high tension, an induction-coil having a magneticmetal pole, a line or primary circuit including the fine-Wire coil, a current-interrupter for the line-circuit actuated by the magnetic pole of the induction-coil, a local or second ary circuit of low resistance in circuit with the coarse-Wire coil of the induction-coil, and a translating device in said local or secondary circuit.

11. A secondary generator for electrical transmission of energy consisting of the combination of a fine-Wire coil, a line curcuit including the said fine-Wire coil, an interrupter for the current passing through said fine-wire coil, and a coarse-wire coil Wound parallel to the fine-Wire coil, and a local circuit including the coarse-Wire coil.

12. A secondary generator for electrical transmission of energy consisting of the combination of a fine-Wire coil, a line-circuit including the said fine-wire coil, an interrupter for the current passing through said fine-Wire coil, a coarse-wire coil wound parallel to the fine-Wire coil, a local circuit including the coarse-wire coil, and a frame of magnetic material upon or Within Which the coils are Wound.

13. The combination of a source of interrupted electric current of high tension, a line or primary circuit, a high-resistance coil in circuit with said line-circuit a low-resistance coil parallel and in close proximity to the high-resistance coil, a local or secondary circuit including said low-resistance coil, and a frame of magnetic material in close proximity upon Which the coils are Wound.

In testimony of which invention I have hereunto set my hand.

R. M. HUNTER.

Witnesses:

ERNEST HOWARD HUNTER, S. T. YnRKns. 

